The CO2 emission from grey cement production amounts to almost 500000 t per year of which app. 2/3 originates from the preheating and chalk calcination (CaCO3->CaO+CO2).
On longer term the calcination technology will be expanded to calcining clay where clay is heated to a temperature of app. 850 where the clay is activated and becomes reactive in combination with cement.
They are looking for electrical energy solutions to generate sufficient heat for the calcining process (chalk or clay).
Want to solve the challenge? Apply here: THE FORM